From ef7b96c157f644f97907858ec6aea6d377e6639b Mon Sep 17 00:00:00 2001
From: Darren Schroeder <343840+fdncred@users.noreply.github.com>
Date: Thu, 11 Jan 2024 15:41:29 -0600
Subject: [PATCH] Revert "Fix move to line start in multi-line history entries"
 (#704)

---
 src/engine.rs | 119 ++++++--------------------------------------------
 1 file changed, 13 insertions(+), 106 deletions(-)

diff --git a/src/engine.rs b/src/engine.rs
index 17dd025c..30bb43bc 100644
--- a/src/engine.rs
+++ b/src/engine.rs
@@ -1403,6 +1403,15 @@ impl Reedline {
     /// Executes [`EditCommand`] actions by modifying the internal state appropriately. Does not output itself.
     pub fn run_edit_commands(&mut self, commands: &[EditCommand]) {
         if self.input_mode == InputMode::HistoryTraversal {
+            if matches!(
+                self.history_cursor.get_navigation(),
+                HistoryNavigationQuery::Normal(_)
+            ) {
+                if let Some(string) = self.history_cursor.string_at_cursor() {
+                    self.editor
+                        .set_buffer(string, UndoBehavior::HistoryNavigation);
+                }
+            }
             self.input_mode = InputMode::Regular;
         }
 
@@ -1757,110 +1766,8 @@ impl Reedline {
     }
 }
 
-#[cfg(test)]
-mod test {
-    use super::*;
-    use crate::DefaultPrompt;
-    use pretty_assertions::assert_eq;
-    use rstest::rstest;
-    use std::error::Error;
-    use std::result::Result;
-
-    #[test]
-    fn thread_safe() {
-        fn f<S: Send>(_: S) {}
-        f(Reedline::create());
-    }
-
-    #[rstest]
-    #[case("")]
-    #[case("line of text")]
-    #[case(
-        "longgggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg line of text"
-    )]
-    fn test_move_to_line_start(#[case] input: &str) -> Result<(), Box<dyn Error>> {
-        let mut reedline = Reedline::create();
-        let prompt = DefaultPrompt::default();
-
-        let insert_input_event =
-            ReedlineEvent::Edit(vec![EditCommand::InsertString(input.to_string())]);
-        let move_to_line_start_event = ReedlineEvent::Edit(vec![EditCommand::MoveToLineStart]);
-
-        // Have to resize, or painting.utils.estimate_single_line_wraps panics with divide-by-zero.
-        reedline.handle_event(&prompt, ReedlineEvent::Resize(u16::MAX, u16::MAX))?;
-
-        // Write the string, and then move to the start of the line.
-        reedline.handle_event(&prompt, insert_input_event)?;
-        reedline.handle_event(&prompt, move_to_line_start_event.clone())?;
-        assert_eq!(reedline.editor.line_buffer().insertion_point(), 0);
-
-        // Enter the string into history, then scroll back up and move to the start of the line.
-        reedline.handle_event(&prompt, ReedlineEvent::Enter)?;
-        reedline.handle_event(&prompt, ReedlineEvent::Up)?;
-        reedline.handle_event(&prompt, move_to_line_start_event)?;
-        assert_eq!(reedline.editor.line_buffer().insertion_point(), 0);
-
-        Ok(())
-    }
-
-    #[rstest]
-    // Each input must be >=2 lines.
-    // Up/Down commands move in text/history depending on the number of lines.
-    #[case("a\nb", 2, 2)]
-    #[case("123456789\n123456789\n123456789", 10, 20)]
-    #[case("0\n1\n2\n3\n4\n5\n6\n7\n8\n9", 2, 18)]
-    fn test_move_to_line_start_multiline(
-        #[case] input: &str,
-        #[case] second_line_start: usize,
-        #[case] last_line_start: usize,
-    ) -> Result<(), Box<dyn Error>> {
-        let mut reedline = Reedline::create();
-        let prompt = DefaultPrompt::default();
-
-        let insert_input_event =
-            ReedlineEvent::Edit(vec![EditCommand::InsertString(input.to_string())]);
-        let move_to_line_start_event = ReedlineEvent::Edit(vec![EditCommand::MoveToLineStart]);
-        let move_to_end_event = ReedlineEvent::Edit(vec![EditCommand::MoveToEnd]);
-
-        // Have to resize, or painting.utils.estimate_single_line_wraps panics with divide-by-zero.
-        reedline.handle_event(&prompt, ReedlineEvent::Resize(u16::MAX, u16::MAX))?;
-
-        // Write the string, and then move to the start of the last line.
-        reedline.handle_event(&prompt, insert_input_event)?;
-        reedline.handle_event(&prompt, move_to_line_start_event.clone())?;
-        assert_eq!(
-            reedline.editor.line_buffer().insertion_point(),
-            last_line_start
-        );
-
-        // Enter the string into history, then scroll back up and move to the start of the first line.
-        reedline.handle_event(&prompt, ReedlineEvent::Enter)?;
-        reedline.handle_event(&prompt, ReedlineEvent::Up)?;
-        reedline.handle_event(&prompt, move_to_line_start_event.clone())?;
-        assert_eq!(reedline.editor.line_buffer().insertion_point(), 0);
-
-        // Enter the string again, then scroll up in history, move down one line,
-        // and move to the start of the second line.
-        reedline.handle_event(&prompt, ReedlineEvent::Enter)?;
-        reedline.handle_event(&prompt, ReedlineEvent::Up)?;
-        reedline.handle_event(&prompt, ReedlineEvent::Down)?;
-        reedline.handle_event(&prompt, move_to_line_start_event.clone())?;
-        assert_eq!(
-            reedline.editor.line_buffer().insertion_point(),
-            second_line_start
-        );
-
-        // Enter the string again, then scroll up in history, move to the end of the text,
-        // and move to the start of the last line.
-        reedline.handle_event(&prompt, ReedlineEvent::Enter)?;
-        reedline.handle_event(&prompt, ReedlineEvent::Up)?;
-        reedline.handle_event(&prompt, move_to_end_event)?;
-        reedline.handle_event(&prompt, move_to_line_start_event)?;
-        assert_eq!(
-            reedline.editor.line_buffer().insertion_point(),
-            last_line_start
-        );
-
-        Ok(())
-    }
+#[test]
+fn thread_safe() {
+    fn f<S: Send>(_: S) {}
+    f(Reedline::create());
 }